plotutils (or The GNU Plotting Utilities) are a set of programs and
functions for drawing and data plotting. They include
a program for plotting two-dimensional scientific data. The programs are
built on top of GNU
libplot, a library for device-independent
two-dimensional vector graphics.
graph can display a graph
under X-Windows and produce output in several file formats. These include
idraw-editable Postscript, output
that may be edited with Xfig, output in
HP-GL/2 format for HP printers, output for Tektronix terminals, and
output in the GNU graphics metafile format.
graph is a `plot filter' called
plot. It translates device-independent GNU graphics metafiles
(produced for example by
graph) into any of the other output
Among the other programs,
spline does spline interpolation of
data. It normally uses either cubic spline interpolation or exponential
splines in tension. Like
graph, it can function as a
real-time filter under some circumstances.
ode provides the
ability to integrate an ordinary differential equation, or a system of
ordinary differential equations, when provided with an explicit expression
for each equation. It supplements the plotting program gnuplot, which can plot functions but not integrate
ordinary differential equations.
Distributed as a part of this package is GNU
underlying function library for device-independent two-dimensional vector
graphics. It supports all the above output formats. It can draw such
objects as lines, open and closed polylines, arcs, circles and ellipses,
points, and markers. The filling of objects other than points and markers
is supported (fill color, as well as pen color, may be set arbitrarily).
Text strings may be drawn in any of 16 Hershey fonts, 35 Postscript fonts,
and 45 PCL fonts. Cyrillic and Japanese Hershey fonts are included.
Current Version: 2.3
License Type: GPL
Source Code Availability: Yes
Available Binary Packages:
SGI, HP-UX, IBM, Sun, compiles and works fine on Linux without change of source code.
C compiler, X11 libraries (needed for X11 screen output)
ftp://ftp.gnu.org/pub/gnu/plotutils/ (FTP Site)
Mailing Lists/USENET News Groups:
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